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首页> 外文期刊>BMC Public Health >Cross-sectional associations between sleep duration, sedentary time, physical activity, and adiposity indicators among Canadian preschool-aged children using compositional analyses
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Cross-sectional associations between sleep duration, sedentary time, physical activity, and adiposity indicators among Canadian preschool-aged children using compositional analyses

机译：使用成分分析的加拿大学龄前儿童睡眠时间，久坐时间，体育锻炼和肥胖指标之间的横断面关联

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Sleep duration, sedentary behaviour, and physical activity are three co-dependent behaviours that fall on the movementon-movement intensity continuum. Compositional data analyses provide an appropriate method for analyzing the association between co-dependent movement behaviour data and health indicators. The objectives of this study were to examine: (1) the combined associations of the composition of time spent in sleep, sedentary behaviour, light-intensity physical activity (LPA), and moderate- to vigorous-intensity physical activity (MVPA) with adiposity indicators; and (2) the association of the time spent in sleep, sedentary behaviour, LPA, or MVPA with adiposity indicators relative to the time spent in the other behaviours in a representative sample of Canadian preschool-aged children. Participants were 552 children aged 3 to 4?years from cycles 2 and 3 of the Canadian Health Measures Survey. Sedentary time, LPA, and MVPA were measured with Actical accelerometers (Philips Respironics, Bend, OR USA), and sleep duration was parental reported. Adiposity indicators included waist circumference (WC) and body mass index (BMI) z-scores based on World Health Organization growth standards. Compositional data analyses were used to examine the cross-sectional associations. The composition of movement behaviours was significantly associated with BMI z-scores (p?=?0.006) but not with WC (p?=?0.718). Further, the time spent in sleep (BMI z-score: γ sleep =??0.72; p?=?0.138; WC: γ sleep =??1.95; p?=?0.285), sedentary behaviour (BMI z-score: γ SB =?0.19; p?=?0.624; WC: γ SB =?0.87; p?=?0.614), LPA (BMI z-score: γ LPA =?0.62; p?=?0.213, WC: γ LPA =?0.23; p?=?0.902), or MVPA (BMI z-score: γ MVPA =??0.09; p?=?0.733, WC: γ MVPA =?0.08; p?=?0.288) relative to the other behaviours was not significantly associated with the adiposity indicators. This study is the first to use compositional analyses when examining associations of co-dependent sleep duration, sedentary time, and physical activity behaviours with adiposity indicators in preschool-aged children. The overall composition of movement behaviours appears important for healthy BMI z-scores in preschool-aged children. Future research is needed to determine the optimal movement behaviour composition that should be promoted in this age group.
机译：睡眠时间，久坐行为和体育锻炼是三种相互依存的行为，它们取决于运动/不运动强度的连续性。成分数据分析提供了一种分析相互依赖的运动行为数据与健康指标之间关联的适当方法。这项研究的目的是检查：（1）睡眠时间，久坐行为，轻度体育锻炼（LPA）以及中度至剧烈体育锻炼（MVPA）与肥胖的综合关系指标; （2）在加拿大学龄前儿童的代表性样本中，相对于其他行为所花费的时间，睡眠，久坐行为，LPA或MVPA所花费的时间与肥胖指标的关联。参加者是来自《加拿大卫生措施调查》第2和第3周期的3-5岁的552岁儿童。静坐时间，LPA和MVPA用Actic加速度计（Philips Respironics，Bend，美国）测量，睡眠时间由父母报告。肥胖指标包括根据世界卫生组织增长标准的腰围（WC）和体重指数（BMI）z得分。成分数据分析用于检查横截面关联。运动行为的构成与BMI z得分显着相关（p？=？0.006），但与WC无关（p？=？0.718）。此外，睡眠时间（BMI z-得分：γsleep＝≤0.72;p≥＝ 0.138; WC：γsleep＝≤1.95;p≥＝ 0.285），久坐行为（BMI z-得分： γSB ＝ 0.19; p ＝ 0.624; WC：γSB ＝ 0.87; p ＝ 0.614; BMI（zMI评分：γLPA ＝ 0.62; p ＝ 0.213; WC：γLPA ＝ 0.23;p≤0.902），或MVPA（BMI z评分：γMVPA =≤0.09;p≥0.733; WC：γMVPA =≤0.08;p≤0.288）。行为与肥胖指标没有显着相关。这项研究是在检查学龄前儿童中相互依赖的睡眠时间，久坐时间和身体活动行为与肥胖指标的关联时，首次使用成分分析的方法。运动行为的整体组成对于学龄前儿童的健康BMI z评分似乎很重要。需要进行进一步的研究来确定在该年龄段应促进的最佳运动行为组成。

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